What are qualities that are needed in a stand mixer?

I'm an industrial design student, and I am redesigning a stand mixer and I'm looking for any input on features that are required for people who use it at least on a semi regular basis, especially elderly consumers or smaller in stature cooks.

Some areas of interest for my redesign are:

1. Ease of use, especially the tilt aspect, are mixers hard to operate for older people, in particular older women.


2. Main use, what kind of product do you make the most and how is your mixer in that area.


3. Cost, if you were to buy a new one what price range would you look at?


4. Controls, are they placed intelligently and are they easy to use.

Thanks in advance for any information.